NRC Board Operation Mode Selection and Power Supply

The DIP switch on the NRC board can be configured to select one of the following three modes of operation:

Warning

The DIP switch configurations described below assume that the board is oriented in a way that the printed numeric indices are positioned below, not above the DIP switch box. Different board versions may have different up-down DIP switch box orientation, even if the relative DIP switch box locations on the board remain the same.

1. Firmware Download / RAM Operation

_images/dip_switch_download.png

DIP Switch Configuration: HHHLLH

This mode is used to both upload a RAM-mode firmware binary to the RAM for immediate execution or flash an XIP standalone firmware binary or other information to the non-volatile flash memory.

A 5V adapter is used to directly supply power to the NRC board.

2. Standalone Operation

_images/dip_switch_standalone.png

DIP Switch Configuration: HLLHLH

This mode is used to run the standalone application contained in the stored XIP standalone firmware binary.

A 5V adapter is used to directly supply power to the NRC board.

3. Raspberry Pi Host Operation

_images/dip_switch_host.png

DIP Switch Configuration: HHLLLH

This mode is used to run the NRC board with a Raspberry Pi Host physically mounted below the module.

The Raspberry Pi host supplies power to the NRC board.

Note

Most NRC tools only use Firmware Upload / RAM Operation mode. The exact modes of operation used by a given tool will be specified in the usage documentation.